IP+Optical Synergy


IP+Optical Synergy

Fueled by the full cloudification of network data storage, rapid development of Internet services, and relentless emergence of new services, the traffic growth rate is expected to exceed 50% over the next few years. More data-intensive traffic will be generated and services will become more sensitive to SLA indicators such as delay despite a traffic model that is generally complex and disordered. These changes drive carriers to pursue Internet-based transformation and converge IT and CT to build next-generation backbone networks. However, such networks pose higher requirements in terms of resource utilization, SLA compliance, O&M, and other aspects. Huawei's SDN IP+optical solution reshapes the resource configuration pattern of traditional networks. This solution achieves effective synergy between IP and optical networks through software-based network configuration control, simplifying network O&M and improving network intelligence and automation.

Use Cases

Multi-Layer Discovery and Visualization

To address problems such as layer-specific network visibility and difficult fault locating, the NCE-based IP+optical solution leverages multi-layer topology discovery to automatically generate a 3D network view that shows resource, traffic, and fault information, helping to improve O&M efficiency.

Automated Multi-Layer Link Provisioning

Cross links are the bridge between IP and optical networks. After carriers deploy optical devices and resources, the optical network can support many potential multi-layer links. The IP network is aware of these potential multi-layer links and activates them on demand according to changes in IP traffic or protection requirements.

Multi-Layer Restoration

Multi-layer restoration by optical ASON (MLR-O) attempts to restore service paths through ASON rerouting. When a fault occurs, NCE (Super) dynamically computes protection paths based on available optical resources, protecting the network against multiple fiber cuts in addition to saving wavelength resources. For low-priority services that do not require fast IP-layer protection mechanisms, cost-effective MLR-O is an ideal choice.

Multi-Layer Analysis and Simulation

NCE (Super) can analyze the impact of optical node and link faults on IP tunnels and links through fault simulation and generate analysis reports, which helps minimize dependency on manual intervention and cutover accidents, improve network robustness, and simplify O&M.

Multi-Layer Optimization

NCE (Super) simplifies O&M by automatically optimizing network-wide service resources and policies based on multi-layer traffic information. Optimization can be performed according to either traffic status or latency. If network congestion occurs, NCE (Super) automatically performs multi-layer capacity expansion. If latency increases and the IP layer is unable to address this issue, NCE (Super) performs multi-layer bypassing.